Steam-trap.



No. 669,474. Patented Mar. 5, 19". W. BROAD.

STEAM TRAP.

(Application filed Oct. 27, 1900.)

(No Model.)

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WILLIAM BROAD, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR OF FOUR FIFTHS TO SAMUEL IVIOLAUGHLIN, HENRY J. MURPHY, CHARLES W. SHOEMAKER, AND ROBERT MOLAUGI-ILIN.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 669,474, dated March 5, 1901.

Application filed October 27, 1900. Serial No. 34,641. (No model.)

T at, whom, it may concern: The device is attached to the steam-supply 55 Beit known tbatLWILLIAM BROAD, (whose pipe at the head 5. The steam causes the post-office address is Beaver Falls, Beaver copper strip 9 to expand, and as it expands county, Pennsylvania,) acitizen of the United the small spring 11 forces the valve to its seat States of America, residing at Beaver Falls, and closes the exit 14. When the temperain the county of Beaver and State of Pennsylture falls and the steam condenses, the cop- 6o Vania, have invented certain new and useful per strip contracts and draws the valve away Improvements in Steam-Traps; andIdo herefrom the seat, thus allowing the water to esby declare the following to be a full, clear, cape from the exit 14. and exact description thereof, reference being To regulate the device for different temhad to the accompanying drawings, which peratures, the plug 12 is screwed in or out to form a part of this specification. decrease or increase the distance between the This invention relates to certain new and valve and its seat. useful improvements in an automatic steam- The device will work equally as well when 15 condensing trap. I placed inside or outside of the building, as it The invention is adapted to be connected to will not freeze up.

the steam-supply pipe; and the object thereof Having thus shown and described my inis to relieve said pipe of the condensed steam vention, what I claim as new, and desire to or water. secure by Letters Patent, is-

20 I accomplish my object by means of the de- 1. In a device for the purpose set forth, the

vice illustrated in the accompanying drawcombination of a cylinder having an inletings, in which.- opening and an outlet-opening, a thin metal Figurelis avertical sectional view through strip rigidly secured at each end within the the device. Fig. 2 is an end view of the same. cylinder and being normally straight, a valve 25 Fig. 3 is a perspectiveview of a metal strip adapted to close the outlet-opening, said valve employed in the device to operate the valve. being connected to said strip and normally Fig. 4 is a longitudinal side elevation of the out of engagement with its seat, and a spring valve. interposed between the strip and a fixed sup- Referring to the drawings, the numeral 1 port and acting to bend the strip toward the 30 designates a small cylinder having branches valve-seat when said strip is expanded, sub- 2 and 3 thereon. A screw-cap 4 is secured stantially as set forth. upon one end of the cylinder to close the same, 2. In a device for the purpose set forth, the and upon the other end is secured a screwcombination of a cylinder having an inletcap 5, having an opening 5' therein to admit opening and an outlet-opening, an adjustable 1 35 the steam. The stem of the valve has formed valve-seat forming part of said outlet-openthereon the lugs 8, which engage the sides of ing, a thin metal strip rigidly secured at each a strip of copper 9, said copper strip being end within the cylinder and being normally I fixed at each end to the cylinder by rivets 9 straight, a valve adapted to engage said seat a and being normally straight. to close the outlet-opening, said valve being 0 Fitted tightly into the end of the branch connected to said strip and normally out of pipe 2 is the screw-plug IO, and between the engagement with the seat, and a spring inter- 5 end of this plug and the copper strip is arposed between the strip and a fixed support ranged a small spiral spring 11, which spring and acting to bend the strip toward the valveinsures that the copper strip will bend or bow seat when said strip is expanded, substan- 5 toward the valve 7, and thereby close the lattially as set forth.

ter. When the copper strip contracts and In testimony whereof I have hereunto af- Loo straightens out, it lifts the valve from its seat fixed my signature in the presence of two suband puts the spring 11 under tension. An scribing witnesses. adjustable screw-plug 12 is fitted within the i 5o branch 3. This plug is provided with a jarn- WILLIAM BROAD. nut 13 to engage the end of the branch and secure it in position. Through the center of Witnesses: this plug is formed an opening 14, which ter- ROBERT MCLAUGHLIN, minates in a valve-seat 14. J 0s. 0. ROUZER. 

